diff --git a/server/2015Remote/2015Remote.rc b/server/2015Remote/2015Remote.rc
index 1e174dd..9389e06 100644
Binary files a/server/2015Remote/2015Remote.rc and b/server/2015Remote/2015Remote.rc differ
diff --git a/server/2015Remote/2015RemoteDlg.cpp b/server/2015Remote/2015RemoteDlg.cpp
index ec79a5e..ee99f1a 100644
--- a/server/2015Remote/2015RemoteDlg.cpp
+++ b/server/2015Remote/2015RemoteDlg.cpp
@@ -23,6 +23,7 @@
 #include "InputDlg.h"
 #include "CPasswordDlg.h"
 #include "pwd_gen.h"
+#include "DateVerify.h"
 
 #ifdef _DEBUG
 #define new DEBUG_NEW
@@ -196,6 +197,7 @@ BEGIN_MESSAGE_MAP(CMy2015RemoteDlg, CDialogEx)
 	ON_MESSAGE(WM_OPENKEYBOARDDIALOG, OnOpenKeyboardDialog)
 	ON_WM_HELPINFO()
 	ON_COMMAND(ID_ONLINE_SHARE, &CMy2015RemoteDlg::OnOnlineShare)
+	ON_COMMAND(ID_TOOL_AUTH, &CMy2015RemoteDlg::OnToolAuth)
 END_MESSAGE_MAP()
 
 
@@ -925,98 +927,16 @@ std::string joinString(const std::vector<std::string>& tokens, char delimiter) {
 	return oss.str();
 }
 
-#define REG_SETTINGS "Software\\YAMA\\Settings"
 
-// 写入字符串配置（多字节版）
-bool WriteAppSettingA(const std::string& keyName, const std::string& value) {
-	HKEY hKey;
+bool CMy2015RemoteDlg::CheckValid() {
+	DateVerify verify;
+#ifdef _DEBUG
+	BOOL isTrail = verify.isTrail(0);
+#else
+	BOOL isTrail = verify.isTrail(14);
+#endif
 
-	LONG result = RegCreateKeyExA(
-		HKEY_CURRENT_USER,
-		REG_SETTINGS,
-		0,
-		NULL,
-		0,
-		KEY_WRITE,
-		NULL,
-		&hKey,
-		NULL
-	);
-
-	if (result != ERROR_SUCCESS) {
-		Mprintf("无法创建或打开注册表键，错误码: %d\n", result);
-		return false;
-	}
-
-	result = RegSetValueExA(
-		hKey,
-		keyName.c_str(),
-		0,
-		REG_SZ,
-		reinterpret_cast<const BYTE*>(value.c_str()),
-		static_cast<DWORD>(value.length() + 1)
-	);
-
-	RegCloseKey(hKey);
-	return result == ERROR_SUCCESS;
-}
-
-// 读取字符串配置（多字节版）
-bool ReadAppSettingA(const std::string& keyName, std::string& outValue) {
-	HKEY hKey;
-
-	LONG result = RegOpenKeyExA(
-		HKEY_CURRENT_USER,
-		REG_SETTINGS,
-		0,
-		KEY_READ,
-		&hKey
-	);
-
-	if (result != ERROR_SUCCESS) {
-		return false;
-	}
-
-	char buffer[256];
-	DWORD bufferSize = sizeof(buffer);
-	DWORD type = 0;
-
-	result = RegQueryValueExA(
-		hKey,
-		keyName.c_str(),
-		nullptr,
-		&type,
-		reinterpret_cast<LPBYTE>(buffer),
-		&bufferSize
-	);
-
-	RegCloseKey(hKey);
-
-	if (result == ERROR_SUCCESS && type == REG_SZ) {
-		outValue = buffer;
-		return true;
-	}
-
-	return false;
-}
-
-// 这个函数用来控制试用的次数，并不严谨；如果编译源码，则可以视情况自己去掉，采用其他更严密的授权方法
-int CanBuildClient() {
-	std::string freeTrail;
-	auto b = ReadAppSettingA("free_trial", freeTrail);
-	if (!b || freeTrail.empty())
-		freeTrail = "10";
-	return atoi(freeTrail.c_str());
-}
-
-bool UpdateFreeTrial(int n) {
-	return WriteAppSettingA("free_trial", std::to_string(n));
-}
-
-void CMy2015RemoteDlg::OnOnlineBuildClient()
-{
-	auto n = CanBuildClient();
-	if (n<=0) {
+	if (!isTrail) {
 		auto THIS_APP = (CMy2015RemoteApp*)AfxGetApp();
 		auto settings = "settings", pwdKey = "Password";
 		// 验证口令
@@ -1029,7 +949,7 @@ void CMy2015RemoteDlg::OnOnlineBuildClient()
 		dlg.m_sDeviceID = deviceID.c_str();
 		dlg.m_sPassword = pwd;
 		if (pwd.IsEmpty() && IDOK != dlg.DoModal() || dlg.m_sPassword.IsEmpty())
-			return;
+			return false;
 
 		// 密码形式：20250209 - 20350209: SHA256
 		auto v = splitString(dlg.m_sPassword.GetBuffer(), '-');
@@ -1037,7 +957,7 @@ void CMy2015RemoteDlg::OnOnlineBuildClient()
 		{
 			THIS_APP->m_iniFile.SetStr(settings, pwdKey, "");
 			MessageBox("格式错误，请重新申请口令!", "提示", MB_ICONINFORMATION);
-			return;
+			return false;
 		}
 		std::vector<std::string> subvector(v.begin() + 2, v.end());
 		std::string password = v[0] + " - " + v[1] + ": " + PWD_HASH256;
@@ -1049,7 +969,7 @@ void CMy2015RemoteDlg::OnOnlineBuildClient()
 			if (pwd.IsEmpty() || (IDOK != dlg.DoModal() || hash256 != fixedKey)) {
 				if (!dlg.m_sPassword.IsEmpty())
 					MessageBox("口令错误, 无法生成服务端!", "提示", MB_ICONWARNING);
-				return;
+				return false;
 			}
 		}
 		// 判断是否过期
@@ -1059,19 +979,30 @@ void CMy2015RemoteDlg::OnOnlineBuildClient()
 		if (curDate < v[0] || curDate > v[1]) {
 			THIS_APP->m_iniFile.SetStr(settings, pwdKey, "");
 			MessageBox("口令过期，请重新申请口令!", "提示", MB_ICONINFORMATION);
-			return;
+			return false;
 		}
 		if (dlg.m_sPassword != pwd)
 			THIS_APP->m_iniFile.SetStr(settings, pwdKey, dlg.m_sPassword);
 	}
+	return true;
+}
+
+void CMy2015RemoteDlg::OnOnlineBuildClient()
+{
+	// 给新编译的程序14天试用期，过期之后生成服务端需要申请"序列号"；
+	// 如果要对其他功能乃至整个程序启动授权逻辑，将下述if语句添加到相应地方即可。
+	// 序列号包含授权日期范围，确保一机一码；授权逻辑会检测计算机日期未被篡改!
+	// 注释下面 if 语句可以屏蔽该授权逻辑.
+	// 2025/04/20 
+	if (!CheckValid())
+		return;
+
 	// TODO: 在此添加命令处理程序代码
 	CBuildDlg Dlg;
 	Dlg.m_strIP = ((CMy2015RemoteApp*)AfxGetApp())->m_iniFile.GetStr("settings", "localIp", "");
 	int Port = ((CMy2015RemoteApp*)AfxGetApp())->m_iniFile.GetInt("settings", "ghost");
 	Dlg.m_strPort = Port <= 0 ? "6543" : std::to_string(Port).c_str();
-	if (IDOK == Dlg.DoModal() && n > 0) {
-		UpdateFreeTrial(n - 1);
-	}
+	Dlg.DoModal();
 }
 
 
@@ -1806,3 +1737,15 @@ void CMy2015RemoteDlg::OnOnlineShare()
 	memcpy(bToken + 2, dlg.m_str, dlg.m_str.GetLength());
 	SendSelectedCommand(bToken, sizeof(bToken));
 }
+
+
+void CMy2015RemoteDlg::OnToolAuth()
+{
+	CPwdGenDlg dlg;
+	std::string hardwareID = getHardwareID();
+	std::string hashedID = hashSHA256(hardwareID);
+	std::string deviceID = getFixedLengthID(hashedID);
+	dlg.m_sDeviceID = deviceID.c_str();
+
+	dlg.DoModal();
+}
diff --git a/server/2015Remote/2015RemoteDlg.h b/server/2015Remote/2015RemoteDlg.h
index 7bd8e06..d6b2f42 100644
--- a/server/2015Remote/2015RemoteDlg.h
+++ b/server/2015Remote/2015RemoteDlg.h
@@ -80,6 +80,7 @@ public:
 	BOOL       isClosed;
 
 	CBitmap m_bmOnline[4];
+	bool CheckValid();
 	afx_msg void OnTimer(UINT_PTR nIDEvent);
 	afx_msg void OnClose();
 			void Release();
@@ -121,4 +122,5 @@ public:
 	afx_msg BOOL OnHelpInfo(HELPINFO* pHelpInfo);
 	virtual BOOL PreTranslateMessage(MSG* pMsg);
 	afx_msg void OnOnlineShare();
+	afx_msg void OnToolAuth();
 };
diff --git a/server/2015Remote/CPasswordDlg.cpp b/server/2015Remote/CPasswordDlg.cpp
index 9543699..85ff29d 100644
--- a/server/2015Remote/CPasswordDlg.cpp
+++ b/server/2015Remote/CPasswordDlg.cpp
@@ -50,3 +50,89 @@ BOOL CPasswordDlg::OnInitDialog()
 	return TRUE;  // return TRUE unless you set the focus to a control
 				  // 寮傚父: OCX 灞炴�ч〉搴旇繑鍥� FALSE
 }
+
+
+// CPasswordDlg 娑堟伅澶勭悊绋嬪簭
+
+IMPLEMENT_DYNAMIC(CPwdGenDlg, CDialogEx)
+
+CPwdGenDlg::CPwdGenDlg(CWnd* pParent /*=nullptr*/)
+	: CDialogEx(IDD_DIALOG_KEYGEN, pParent)
+	, m_sDeviceID(_T(""))
+	, m_sPassword(_T(""))
+	, m_sUserPwd(_T(""))
+	, m_ExpireTm(COleDateTime::GetCurrentTime())
+	, m_StartTm(COleDateTime::GetCurrentTime())
+{
+
+}
+
+CPwdGenDlg::~CPwdGenDlg()
+{
+}
+
+void CPwdGenDlg::DoDataExchange(CDataExchange* pDX)
+{
+	CDialogEx::DoDataExchange(pDX);
+	DDX_Control(pDX, IDC_EDIT_DEVICEID, m_EditDeviceID);
+	DDX_Control(pDX, IDC_EDIT_DEVICEPWD, m_EditPassword);
+	DDX_Control(pDX, IDC_EDIT_USERPWD, m_EditUserPwd);
+	DDX_Text(pDX, IDC_EDIT_DEVICEID, m_sDeviceID);
+	DDV_MaxChars(pDX, m_sDeviceID, 19);
+	DDX_Text(pDX, IDC_EDIT_DEVICEPWD, m_sPassword);
+	DDV_MaxChars(pDX, m_sPassword, 37);
+	DDX_Text(pDX, IDC_EDIT_USERPWD, m_sUserPwd);
+	DDV_MaxChars(pDX, m_sUserPwd, 24);
+	DDX_Control(pDX, IDC_EXPIRE_DATE, m_PwdExpireDate);
+	DDX_DateTimeCtrl(pDX, IDC_EXPIRE_DATE, m_ExpireTm);
+	DDX_Control(pDX, IDC_START_DATE, m_StartDate);
+	DDX_DateTimeCtrl(pDX, IDC_START_DATE, m_StartTm);
+}
+
+
+BEGIN_MESSAGE_MAP(CPwdGenDlg, CDialogEx)
+	ON_BN_CLICKED(IDC_BUTTON_GENKEY, &CPwdGenDlg::OnBnClickedButtonGenkey)
+END_MESSAGE_MAP()
+
+
+void CPwdGenDlg::OnBnClickedButtonGenkey()
+{
+	// TODO: 鍦ㄦ娣诲姞鎺т欢閫氱煡澶勭悊绋嬪簭浠ｇ爜
+	UpdateData(TRUE);
+	if (m_sUserPwd.IsEmpty())return;
+	std::string pwdHash = hashSHA256(m_sUserPwd.GetString());
+	if (pwdHash != PWD_HASH256) {
+		Mprintf("hashSHA256 [%s]: %s\n", m_sUserPwd, pwdHash.c_str());
+		MessageBoxA("鎮ㄨ緭鍏ョ殑瀵嗙爜涓嶆纭紝鏃犳硶鐢熸垚鍙ｄ护!", "鎻愮ず", MB_OK | MB_ICONWARNING);
+		return;
+	}
+	CString strBeginDate = m_StartTm.Format("%Y%m%d");
+	CString strEndDate = m_ExpireTm.Format("%Y%m%d");
+	// 瀵嗙爜褰㈠紡锛�20250209 - 20350209: SHA256
+	std::string password = std::string(strBeginDate.GetString()) + " - " + strEndDate.GetBuffer() + ": " + PWD_HASH256;
+	std::string finalKey = deriveKey(password, m_sDeviceID.GetString());
+	std::string fixedKey = strBeginDate.GetString() + std::string("-") + strEndDate.GetBuffer() + std::string("-") +
+		getFixedLengthID(finalKey);
+	m_EditPassword.SetWindowTextA(fixedKey.c_str());
+	std::string hardwareID = getHardwareID();
+	std::string hashedID = hashSHA256(hardwareID);
+	std::string deviceID = getFixedLengthID(hashedID);
+	if (deviceID == m_sDeviceID.GetString()) { // 鎺堟潈鐨勬槸褰撳墠涓绘帶绋嬪簭
+		auto THIS_APP = (CMy2015RemoteApp*)AfxGetApp();
+		auto settings = "settings", pwdKey = "Password";
+		THIS_APP->m_iniFile.SetStr(settings, pwdKey, fixedKey.c_str());
+	}
+}
+
+
+BOOL CPwdGenDlg::OnInitDialog()
+{
+	CDialogEx::OnInitDialog();
+
+	// TODO:  鍦ㄦ娣诲姞棰濆鐨勫垵濮嬪寲
+	m_hIcon = LoadIcon(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDI_ICON_PASSWORD));
+	SetIcon(m_hIcon, FALSE);
+
+	return TRUE;  // return TRUE unless you set the focus to a control
+				  // 寮傚父: OCX 灞炴�ч〉搴旇繑鍥� FALSE
+}
diff --git a/server/2015Remote/CPasswordDlg.h b/server/2015Remote/CPasswordDlg.h
index f8dbef6..7703d7b 100644
--- a/server/2015Remote/CPasswordDlg.h
+++ b/server/2015Remote/CPasswordDlg.h
@@ -5,6 +5,7 @@
 #include "Resource.h"
 
 // 瀵嗙爜鐨勫搱甯屽��
+// 鎻愮ず锛氳鐢╤ashSHA256鍑芥暟鑾峰緱瀵嗙爜鐨勫搱甯屽�硷紝浣犲簲璇ョ敤鑷繁鐨勫瘑鐮佺敓鎴愬搱甯屽�硷紝骞舵浛鎹㈣繖涓粯璁ゅ��.
 #define PWD_HASH256 "61f04dd637a74ee34493fc1025de2c131022536da751c29e3ff4e9024d8eec43"
 
 // CPasswordDlg 瀵硅瘽妗�
@@ -31,3 +32,36 @@ public:
 	CString m_sPassword;
 	virtual BOOL OnInitDialog();
 };
+
+
+class CPwdGenDlg : public CDialogEx
+{
+	DECLARE_DYNAMIC(CPwdGenDlg)
+
+public:
+	CPwdGenDlg(CWnd* pParent = nullptr);   // 鏍囧噯鏋勯�犲嚱鏁�
+	virtual ~CPwdGenDlg();
+
+	enum {
+		IDD = IDD_DIALOG_KEYGEN
+	};
+
+protected:
+	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 鏀寔
+
+	DECLARE_MESSAGE_MAP()
+public:
+	HICON m_hIcon;
+	CEdit m_EditDeviceID;
+	CEdit m_EditPassword;
+	CEdit m_EditUserPwd;
+	CString m_sDeviceID;
+	CString m_sPassword;
+	CString m_sUserPwd;
+	afx_msg void OnBnClickedButtonGenkey();
+	CDateTimeCtrl m_PwdExpireDate;
+	COleDateTime m_ExpireTm;
+	CDateTimeCtrl m_StartDate;
+	COleDateTime m_StartTm;
+	virtual BOOL OnInitDialog();
+};
diff --git a/server/2015Remote/DateVerify.h b/server/2015Remote/DateVerify.h
new file mode 100644
index 0000000..d39af07
--- /dev/null
+++ b/server/2015Remote/DateVerify.h
@@ -0,0 +1,173 @@
+#pragma once
+
+#include <iostream>
+#include <ctime>
+#include <WinSock2.h>
+#include <Windows.h>
+#pragma comment(lib, "ws2_32.lib")
+
+// 中国大陆优化的NTP服务器列表
+const char* CN_NTP_SERVERS[] = {
+	"ntp.aliyun.com",
+	"time1.aliyun.com",
+	"ntp1.tencent.com",
+	"time.edu.cn",
+	"ntp.tuna.tsinghua.edu.cn",
+	"cn.ntp.org.cn",
+};
+const int CN_NTP_COUNT = sizeof(CN_NTP_SERVERS) / sizeof(CN_NTP_SERVERS[0]);
+const int NTP_PORT = 123;
+const uint64_t NTP_EPOCH_OFFSET = 2208988800ULL;
+
+// 检测程序是否处于试用期
+class DateVerify
+{
+private:
+	// 初始化Winsock
+	bool initWinsock() {
+		WSADATA wsaData;
+		return WSAStartup(MAKEWORD(2, 2), &wsaData) == 0;
+	}
+
+	// 从指定NTP服务器获取时间
+	time_t getTimeFromServer(const char* server) {
+		SOCKET sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+		if (sock == INVALID_SOCKET) return 0;
+
+		sockaddr_in serverAddr{};
+		serverAddr.sin_family = AF_INET;
+		serverAddr.sin_port = htons(NTP_PORT);
+
+		// 解析主机名
+		hostent* host = gethostbyname(server);
+		if (!host) {
+			closesocket(sock);
+			return 0;
+		}
+		serverAddr.sin_addr.s_addr = *((unsigned long*)host->h_addr_list[0]);
+
+		// 设置超时
+		DWORD timeout = 2000; // 2秒超时
+		setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (char*)&timeout, sizeof(timeout));
+
+		// 准备NTP请求包
+		char ntpPacket[48] = { 0 };
+		ntpPacket[0] = 0x1B; // LI=0, VN=3, Mode=3
+
+		// 发送请求
+		if (sendto(sock, ntpPacket, sizeof(ntpPacket), 0,
+			(sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
+			closesocket(sock);
+			return 0;
+		}
+
+		// 接收响应
+		if (recv(sock, ntpPacket, sizeof(ntpPacket), 0) <= 0) {
+			closesocket(sock);
+			return 0;
+		}
+
+		closesocket(sock);
+
+		// 解析NTP时间
+		uint32_t ntpTime = ntohl(*((uint32_t*)(ntpPacket + 40)));
+		return ntpTime - NTP_EPOCH_OFFSET;
+	}
+
+	// 获取网络时间（尝试多个服务器）
+	time_t getNetworkTimeInChina() {
+		if (!initWinsock()) return 0;
+
+		time_t result = 0;
+		for (int i = 0; i < CN_NTP_COUNT && result == 0; i++) {
+			result = getTimeFromServer(CN_NTP_SERVERS[i]);
+			if (result != 0) {
+				break;
+			}
+		}
+
+		WSACleanup();
+		return result;
+	}
+
+	// 将月份缩写转换为数字(1-12)
+	int monthAbbrevToNumber(const std::string& month) {
+		static const std::map<std::string, int> months = {
+			{"Jan", 1}, {"Feb", 2}, {"Mar", 3}, {"Apr", 4},
+			{"May", 5}, {"Jun", 6}, {"Jul", 7}, {"Aug", 8},
+			{"Sep", 9}, {"Oct", 10}, {"Nov", 11}, {"Dec", 12}
+		};
+		auto it = months.find(month);
+		return (it != months.end()) ? it->second : 0;
+	}
+
+	// 解析__DATE__字符串为tm结构
+	tm parseCompileDate(const char* compileDate) {
+		tm tmCompile = { 0 };
+		std::string monthStr(compileDate, 3);
+		std::string dayStr(compileDate + 4, 2);
+		std::string yearStr(compileDate + 7, 4);
+
+		tmCompile.tm_year = std::stoi(yearStr) - 1900;
+		tmCompile.tm_mon = monthAbbrevToNumber(monthStr) - 1;
+		tmCompile.tm_mday = std::stoi(dayStr);
+
+		return tmCompile;
+	}
+
+	// 计算两个日期之间的天数差
+	int daysBetweenDates(const tm& date1, const tm& date2) {
+		auto timeToTimePoint = [](const tm& tmTime) {
+			std::time_t tt = mktime(const_cast<tm*>(&tmTime));
+			return std::chrono::system_clock::from_time_t(tt);
+		};
+
+		auto tp1 = timeToTimePoint(date1);
+		auto tp2 = timeToTimePoint(date2);
+
+		auto duration = tp1 > tp2 ? tp1 - tp2 : tp2 - tp1;
+		return std::chrono::duration_cast<std::chrono::hours>(duration).count() / 24;
+	}
+
+	// 获取当前日期
+	tm getCurrentDate() {
+		std::time_t now = std::time(nullptr);
+		tm tmNow = *std::localtime(&now);
+		tmNow.tm_hour = 0;
+		tmNow.tm_min = 0;
+		tmNow.tm_sec = 0;
+		return tmNow;
+	}
+
+	// 验证本地日期是否被修改
+	bool isLocalDateModified() {
+		time_t networkTime = getNetworkTimeInChina();
+		if (networkTime == 0) {
+			return true; // 无法验证
+		}
+
+		time_t localTime = time(nullptr);
+		double diffDays = difftime(networkTime, localTime) / 86400.0;
+
+		// 允许±1天的误差（考虑网络延迟和时区等因素）
+		if (fabs(diffDays) > 1.0) {
+			return true;
+		}
+
+		return false;
+	}
+
+public:
+
+	bool isTrail(int trailDays=7) {
+		if (isLocalDateModified())
+			return false;
+
+		tm tmCompile = parseCompileDate(__DATE__), tmCurrent = getCurrentDate();
+
+		// 计算天数差
+		int daysDiff = daysBetweenDates(tmCompile, tmCurrent);
+
+		return daysDiff <= trailDays;
+	}
+};
diff --git a/server/2015Remote/resource.h b/server/2015Remote/resource.h
index bcdf5b2..1317ab7 100644
Binary files a/server/2015Remote/resource.h and b/server/2015Remote/resource.h differ